OBJECTIVE LIFE SCIENCE
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which enzyme is not working correctly if new DNA bases are not added to the template strand?
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DNA Polymerase
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Topoisomerase
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Ligase
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Primase
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Explanation:
Detailed explanation-1: -A group of enzymes called glycosylases play a key role in base excision repair. Each glycosylase detects and removes a specific kind of damaged base.
Detailed explanation-2: -Most of the mistakes during DNA replication are promptly corrected by DNA polymerase by proofreading the base that has been just added ([link]). In proofreading, the DNA pol reads the newly added base before adding the next one, so a correction can be made.
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